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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 165 · 40 questions
TalentJR

Creator's tip (Add the clips): Video length = the clips added up. Minutes → seconds: × 60, then add the extra seconds. Seconds → minutes: take away 60 as many times as it fits. Still needed = target − what you have; 2× speed halves the time, half speed doubles it.

NameDateTime takenScore ___ / 40
  1. 1.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) half as long (c) twice as long (d) silent
  3. 3.⏱️ How many seconds is 1 minute 41 seconds?
  4. 4.⏱️ A video has three clips of 29, 23 and 10 seconds. How long is the video (in seconds)?
  5. 5.⏱️ A video has three clips of 25, 18 and 9 seconds. How long is the video (in seconds)?
  6. 6.⏱️ How many seconds are in 1 minute? (a) 60 (b) 30 (c) 100 (d) 10
  7. 7.⏱️ How many seconds is 2 minutes 3 seconds?
  8. 8.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  10. 10.⏱️ A video has three clips of 12, 43 and 49 seconds. How long is the video (in seconds)?
  11. 11.⏱️ How many seconds is 1 minute 15 seconds?
  12. 12.⏱️ Your video must be 90 seconds long. Your clips add up to 10 seconds. How many more seconds of video do you need?
  13. 13.⏱️ A video is 145 seconds long. How long is that in minutes and seconds? (a) 3 min 25 s (b) 1 min 45 s (c) 2 min 55 s (d) 2 min 25 s
  14. 14.⏱️ A video is 155 seconds long. How long is that in minutes and seconds? (a) 2 min 35 s (b) 1 min 55 s (c) 3 min 35 s (d) 2 min 5 s
  15. 15.⏱️ A video has three clips of 15, 21 and 11 seconds. How long is the video (in seconds)?
  16. 16.⏱️ How many seconds is 4 minutes 3 seconds?
  17. 17.⏱️ A 92-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  18. 18.⏱️ How many seconds is 1 minute 4 seconds?
  19. 19.⏱️ How many seconds is 8 minutes 5 seconds?
  20. 20.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the longest clip (c) always 1 minute (d) the shortest clip
  21. 21.⏱️ A video has three clips of 21, 18 and 17 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video is 160 seconds long. How long is that in minutes and seconds? (a) 2 min 10 s (b) 1 min 60 s (c) 3 min 40 s (d) 2 min 40 s
  23. 23.⏱️ How many seconds is 3 minutes 25 seconds?
  24. 24.⏱️ A 68-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A video is 400 seconds long. How long is that in minutes and seconds? (a) 4 min 0 s (b) 6 min 40 s (c) 6 min 10 s (d) 7 min 40 s
  26. 26.⏱️ Your video must be 60 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
  27. 27.⏱️ Your video must be 90 seconds long. Your clips add up to 6 seconds. How many more seconds of video do you need?
  28. 28.⏱️ Your video must be 60 seconds long. Your clips add up to 39 seconds. How many more seconds of video do you need?
  29. 29.⏱️ A 21-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  30. 30.⏱️ A video is 185 seconds long. How long is that in minutes and seconds? (a) 3 min 5 s (b) 3 min 35 s (c) 4 min 5 s (d) 1 min 85 s
  31. 31.⏱️ A video is 135 seconds long. How long is that in minutes and seconds? (a) 3 min 15 s (b) 2 min 45 s (c) 1 min 35 s (d) 2 min 15 s
  32. 32.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  33. 33.⏱️ Your video must be 60 seconds long. Your clips add up to 8 seconds. How many more seconds of video do you need?
  34. 34.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  35. 35.⏱️ A 24-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  36. 36.⏱️ Your video must be 60 seconds long. Your clips add up to 50 seconds. How many more seconds of video do you need?
  37. 37.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ A video has three clips of 41, 39 and 32 seconds. How long is the video (in seconds)?
  39. 39.⏱️ How many seconds is 4 minutes 50 seconds?
  40. 40.⏱️ A video is 365 seconds long. How long is that in minutes and seconds? (a) 7 min 5 s (b) 6 min 5 s (c) 3 min 65 s (d) 6 min 35 s

Answer key

  1. 24
  2. half as long
  3. 101
  4. 62
  5. 52
  6. 60
  7. 123
  8. 56
  9. 28
  10. 104
  11. 75
  12. 80
  13. 2 min 25 s
  14. 2 min 35 s
  15. 47
  16. 243
  17. 23
  18. 64
  19. 485
  20. the sum of the clips
  21. 56
  22. 2 min 40 s
  23. 205
  24. 34
  25. 6 min 40 s
  26. 51
  27. 84
  28. 21
  29. 7
  30. 3 min 5 s
  31. 2 min 15 s
  32. 60
  33. 52
  34. 50
  35. 12
  36. 10
  37. 18
  38. 112
  39. 290
  40. 6 min 5 s

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